Sofa



FIG. 1 is a perspective view of a sofa showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof; and,

FIG. 5 is a top plan view thereof.

The shorter dashed broken lines depicting the stitching form part of the claimed design.

Views of the sofa not shown in the figures form no part of the claimed design. 

CLAIM The ornamental design for a sofa, as shown and described. 